sweat [sth] off,
sweat off [sth] vtr phrasal sepphrasal verb, transitive, separable: Verb with adverb(s) or preposition(s), having special meaning, divisible--for example, "call off" [=cancel], "call the game off," "call off the game." | informal (weight: lose by exercising) | 通过出汗来减肥
tōng guò chū hàn lái jiǎn féi |